兵馬未動，糧草先行 [－马－动－粮－－－]

Jyutping bing1 maa5 mei6 dung6 , loeng4 cou2 sin1 hang4
Pinyin bīng mǎ wèi dòng , liáng cǎo xiān xíng

Definitions (CC-CEDICT)
  1. before the troops move, fodder and provisions go first (idiom); logistics comes before military maneuvers
  2. an army marches on its stomach